❓ What Are Tankless Water Heaters? Tankless water heaters or on-demand heaters deliver hot water to your faucets when you need it. Traditional tank heaters store hot water and release it when you open the tap. In contrast, tankless systems use rapid heating powered by gas or electric devices to heat the water as it passes through the machine. The low initial upfront cost is one of the main reasons tank water systems are still in use. But tankless systems provide an appealing option for the Surprise homeowner looking to lower utility costs. https://www.pridemarkplumbing.com/do-tankless-water-heaters-really-save-money/